Here's why an expert says it's clear that Prince William and Kate Middleton's marriage is even stronger now than it was ...

Princess Kate is celebrated on her 43rd birthday with a new photo and a heartfelt message from Prince William.

"All of those houses are not structures, they're actually microcosms of people's lives," the "West Wing" actress tells Jake ...

Prince William is celebrating Kate Middleton on her 43rd birthday. In a break with palace tradition, the Prince of Wales ...

As the Princess celebrates her 43rd birthday, we look back at her standout style statements over the years and the meaning ...